Table 3 Examples of representative relations.

From: The Leaf Clinical Trials Corpus: a new resource for query generation from clinical trial eligibility criteria

Category

Relation

Example Annotation

Alternatives and Examples

Abbrev-Of

\(\frac{{\rm{Post}}\;{\rm{Concussion}}\;{\rm{Syndrome}}}{Condition}\mathop{\leftarrow }\limits_{Abbrev \mbox{-} Of}\left(\frac{{\rm{PCS}}}{Condition}\right)\)

Equivalent-To

\(\frac{{\rm{Thrombocytopenia}}}{Condition}\mathop{\leftarrow }\limits_{Equivalent-To}\frac{{\rm{platelets}}}{Observation[lab]} < 100,000/m{m}^{3}{\prime\prime} \)

Example-Of

\(\frac{{\rm{skin}}\;{\rm{condition}}}{Condition}\mathop{\leftarrow }\limits_{Example-Of}\left(e.g.\frac{{\rm{eczema}}}{Condition}\right)\)

Clinical

Contraindicates

conditions \(\frac{{\rm{contraindicating}}}{Contraindication}\mathop{\to }\limits_{Contraindication}\frac{{\rm{MRI}}}{Procedure}\)

Dependent

Caused-By

\(\frac{{\rm{swellings}}}{Observation}\mathop{\to }\limits_{Caused-By}\) due to \(\frac{{\rm{trauma}}}{Condition}\)

Found-By

\(\frac{{\rm{lesion}}}{Observation}\mathop{\to }\limits_{Found \mbox{-} By}\) seen on standard \(\frac{{\rm{imaging}}}{Procedure}\)

Treatment-For

\(\frac{{\rm{coronary}}\;{\rm{bypass}}\;{\rm{surgery}}}{Procedure}\mathop{\to }\limits_{Treatment \mbox{-} For}\) for \(\frac{{\rm{atherosclerosis}}}{Condition}\)

Using

\(\frac{{\rm{total}}\;{\rm{knee}}\;{\rm{arthroplasty}}}{Procedure}\mathop{\to }\limits_{Using}\) with \(\frac{{\rm{spinal}}\;{\rm{anesthesia}}}{Procedure}\)

Logical

If-Then

BMI \(\frac{{\rm{greater}}\;{\rm{than}}\;38}{Eq \mbox{-} Comparison}\mathop{\to }\limits_{If\, \mbox{-} \,Then}\) for \(\frac{{\rm{women}}}{Life \mbox{-} Stage \mbox{-} And \mbox{-} Gender[female]}\)

Qualifier

Risk-For

\(\frac{{\rm{risk}}}{Risk}\mathop{\to }\limits_{Risk \mbox{-} For}\) of \(\frac{{\rm{death}}}{Death}\)

Severity

\(\frac{{\rm{mild}}}{Severity[mild]}\mathop{\to }\limits_{Severity}\) \(\frac{{\rm{symptoms}}}{Observation}\)

Stability

\(\frac{{\rm{hemodynamically}}}{Observation}\mathop{\to }\limits_{Stability}\) \(\frac{{\rm{unstable}}}{Stability[change]}\)

Temporal and Comparative

After

\(\frac{{\rm{infected}}}{Condition}\mathop{\to }\limits_{After}\) following \(\frac{{\rm{admission}}}{Encounter[inpatient]}\)

Before

\({\rm{diagnosis}}\;{\rm{of}}\;\frac{{\rm{aortic}}\;{\rm{stenosis}}}{Condition}\mathop{\to }\limits_{Before}\) prior to \(\frac{{\rm{visit}}}{Encounter}\)

Duration

\(\frac{{\rm{type}}\;1\;{\rm{diabetes}}}{Condition}\mathop{\to }\limits_{Duration}\) for \(\frac{{\rm{at}}\;{\rm{least}}\;1\;{\rm{year}}}{Eq \mbox{-} Comparison}\)

During

\(\frac{{\rm{mechanically}}\;{\rm{ventilated}}}{Procedure}\mathop{\to }\limits_{Duration}\) while \(\frac{{\rm{admitted}}}{Encounter[inpatient]}\)

Numeric-Filter

\(\frac{{\rm{body}}\;{\rm{weight}}}{Observation[vital]}\mathop{\to }\limits_{Numeric \mbox{-} Filter}\frac{{\rm{less}}\;{\rm{than}}\;110\;{\rm{pounds}}}{Eq{\rm{within}}\;{\rm{past}}\;6\;{\rm{months}}Comparison}\)

Minimum-Count

\(\frac{{\rm{admitted}}}{Encounter[inpatient]}\mathop{\to }\limits_{Minimum \mbox{-} Count}\frac{{\rm{at}}\;{\rm{least}}\;{\rm{twice}}}{Eq \mbox{-} Comparison}\)

Temporality

\(\frac{{\rm{seen}}}{Encounter}\mathop{\to }\limits_{Temporality}\frac{{\rm{within}}\;{\rm{past}}\;6\;{\rm{months}}}{Eq \mbox{-} Comparison}\)

Other

Location

\(\frac{{\rm{admitted}}}{Encounter[inpatient]}\mathop{\to }\limits_{Location}\) to the \(\frac{{\rm{ICU}}}{Location[unit]}\)

  1. Direction of arrows indicates role, i.e., subject → target entity.